Variable-line-space mechanism for type-writers.



J. B. SEGOB. VARIABLE LINE SPAGE MEGHANISM FOB. TYPE WRITERS.

APPLICATION FILED Nov. 1a, 1911.

Ptenl July 23, 19112.

INVENTOH 1w-f /i", mon/vnf wlmfssfs .T. E. SEGUE. VARIABLE LINE SPACE MEGEANISM EUR TYPE WRITERS.

APPLIUATION FILED NOV.18,`1911.

Patented July 23, 1912. v

z summe-SHEET 2.

wif/M5358 JEROME B. SECOR, OF DERBY, CONNECTICUT.

VARIABLE-LINE-SPACE MECHANISM FOR TYPE-WRITERS.

Specification of Letters Fatent.

Patented July 23, 1912.

Application led November 18, 1911. Serial No. 661,061.

To all 'u1/tom it may concern Be it known that I, JEROME B. SEGOB, a citizen of the .United States, residing at Derby, New Haven county, in the State of Connecticut', have invented certain newand useful Improvements 1n Variable Line- Space Mechanism for Type-Writers, of which the following is a specification.

My invention relates to that class of mechanisms used on the paper carriages of typewriters, in connection with the regular line space mechanism, to enable the operator to throw oli at will the connection of the platen to the regular line space mechanism, leaving the platen free to be turned' by hand to any position desiredhor to throw on again the connection to such regular line space mechanism for normal operation of the machine.

The object of the present improvement is the perfecting .of the details of such mechanism as will appear more fully from the accompanying description-reference being made to the claims for the novel features and combinations.

In the accompanying drawings Figure 1 is a front view of so much of one end (here, the left end) of a typewriter carriage as is necessary vlto the'illustration of a preferred form of my invention. Fig.2 is an axial sectional view thereof, the parts being shown lin normal position, with the platen connected to the regular line space mechanism. Fig. 3 is an elevation, partly in axial section, of the same mechanism (omitting the platen), the parts being shown in the position assumed at the moment of throwing ott 'the connection to the regulan line space mechanism. Figs. 4 to Sparc detached perspective views of the several parts hereinafter more fully described.

The platenv 1 is of any preferred construction, preferably provided with a rigidly attached hub 2 to engage the trunnion or pivot stud 3, on the inner end of a centering in 4, which extends out beyond the carriage trame or platen housing (part of which is indicated at 5), and has at its outer end the screw thread G. The general ca rriageconstruction is not shown, the invention not being limited to a particular form of such mechanism. An elongated hearing sleeve 7 is securely attached tothe carriage frame or platen housing 5 by flange and nut 9, and affords bearing for a' loose sleeve 10 Which has rigidly attached to its inner end the regular line space ratchet wheel 11, which is operated by hand lever 12 and intermediate mechanism not shown, to give to the platen,

during the ordinary operation of the machine, the regular line-spacerotation.V At 13 is indicated the line-space adjusting lever and at 14 the holding pawl for the ratchet wheel, while at 15 is shown the lever for l throwing olf the holding pawl at will. These'fo last nalned parts are not fully ShOWn-their precise construction not being important to the understanding of the present invention. The sleeve l0 forms a bearing forthe centering pin 4 which is free to rotate and have longitudinal movement therein except when coupled thereto in the manner hereinafter described. Rigidly attached to the pin 4 is a flanged collar 16 on the reduced portion 17 of which is mounted a clamping disk 18, held from turning on the collar in any desired way as for example by forming the part 17 with sides to engage a correspondingly shaped aperture 19 in the disk 18. The disk 18 has a tongue 2O to engage a hole or seat 21 in the end of the platen. This construction is such as to cause the pin 4, clamping disk 18 and the platen. to always rotate together, but to enable the platen'to be 'removed from the other parts at will when it is desired to take it out of the car- 'ria-ge. recessed as shown at 22 to receive the clamping disk 18, a broad Hat surface being provided on the 'wall of the ratchet Wheelv cause these two parts to rotate together when sus` The line space ratchet wheel -11 -isl desired. Preferably a friction surface of terior screw thread 6 of the pm 4. When the sleeve nut 24 is turned upon the pintherefore in one direction, it draws the pin 4 outby engaging the end of sleeve 10,

thus forcing the clamping disk 18 into.

against which the disk 18 may be clamped to i whose interior screw thread engages the ex- Contact nll lll Clamping sul 'le reiche@ Wheel, Vhen the sleeve nut 24; 1s t med in "che elle-r direction it releases the elm'lpng surfaces, so that. the platen may nn vSlee o lie line space ratchet Wheel. Prefealnly'he sleeve nul. QL-'l ldlned by the following means: 'here is ferm-ed npn .said nul a Hnge having pins aclaplvecl to be engsp'ecl bj a crown eluelx 2T en the hub 28 0i' a @numb Wheel Q9 when the lla-lier is pressed i the right. The said hule guided by engagement "with the sleeve nui 24: and s n finally' pressed away ,li'onx the pins Q6 by spring 30.

"i" is feste'eecl Upon the left hand und nene A of pin 4L, gs.efierablyy by ,being screwed ll1ere-- nele. by key 31., e nuit preferably *elle dish .shaped 33, and the surfaces of seid nut and of the lnfe nlerloel'ng clush nlen'xbers, Xaznple, ille toothed shaped pfoee- Lions l/i en the nul; and llecrown clufch i en the lull).

En opel tien, the hub he h'nml Waeel 39 being caused t@ engage with the nut by means 01"' the spring 50, 'the Lunfng of b 'wheel 29 tu'ns the nul; 32, ille pin fl? ille clamping disk 18 and the platen, and also, the Clamping surfaces being normally engage@ the line space atehet wheel if i e thumb Wheel loe forcel lil:- ,l t se s lo elmo-l mzfmbes 2T, and t. wn iurnec 'While libe 1in-s .hanfend of ille @leien l1 i wlvwl elle sleeve locked en ,se n'lovslole pim substanflfvilly as lflesvmlzeil,

s, gnlnzlinn w le 'in "f" p e wheel. en

:piny a clamp upa-m :mul pzn i0 fetale therese eensszininefl le Totale wfll rotaie sa'cl plaen, :m a. lnmlb Wheel Inov- 2 lle suCeessvelj-f nlio engagement Whseif clnch members.

3. n mechanism of the @lnx/meter de scbed, lle combinnlen of a .line speoe 'ratchet Wheel a platen, clamping mecllf nsxn for leaking; the lne spec@ ,mtellet wheel. and yfaiien egethex; and means-mism for actuating such clamping mechanism, comprising an endwise lnemlele pin having a sleeve nut hereon and a nut fixed heretm said sleeve nut nmfng e clutch member, and an enlwise movable tlmmlf- Wheel vl'xg means for engagnlg in its two pestons 'e- Spectvely he said clutch memberj end the seid nu; Wlleh llxe on the endwse mov able pin.

el. In meclenisrn of the fle-- scribed, 'the eonlbnaten of :L line space rachels Wheel., means for locking it to the platen, an endwise movable pin 01' actuatsaid locking' n1eans,a sleevenu; fnealeol on pin and bearing e, clutch member, a, @lun-.l1 menbe on the oute end of said pin? i inlnnnb wheel axially mevable en sleeve nut, .means fol enqsgng it will with 4he clutch member of said pin or with mechanism 'lle ehmecer de ill Combination of e, me space n, ut fixed en said pin fg L Glutei member, e. thumb :ming Deming; on said sleeve nut und l gg a. vlu'ch men'lber on each t@ ent will with the @lull-,l1 memnef of *he Y' l l t m' of the pvot; pin, substantially Jed.

. The cen'xbnzlen with n platen, Q s

lne Space ratchet wheel., means fel f oelrln said Wheel io platen including' e. clutch menlm, il second .cluell member ailape klo imm ille pinion indepen( ily of said the clutch member of the sleeve nut, and n Y Wheel in operative engagement with one of said clutch members.

8. In a mechanism. of the character described, the combination of a line space ratchet wheel, means for locking tt the platen, an endwse movable pin actuating said locking meCns, a clutch member movable relatively to said pin and platen and adapted to move said pin axially, a clutch member xed to said pin. and a thumb 10 Wheel provided with clutchebl adapted to engage the other clutches respectively.

JEROME B. SECOR. Witnesses:

F. COCKERS, FRED EBEL.

copie's of this patent may bc obtained for ve cents each, by addressing the Cbmmissioner of Patenti Washington, D. CJ 

